I only needed to increase the spring tension just enough to keep the rear end from sagging. It is working great. She's handling the jumps and bumps like a champ. They're really not working too much harder than the ones in front of them. The spring is just compressed a little more than 1/4 in. If I compressed all 4 rear springs, the ride would be just a little too stiff. I suppose I could cut 2 clips in half and mount them on all 4, but I don't feel the need to seeing it's handling mint.
Anyone else have any say in the matter? Uncle, Popper, Blue, Kemo, Eric, Jake??? I don't want to damage anything or do anything wrong...

By the way, today is my 33rd b-day and about an hour ago my buddy Tom came over and ordered my Masher 2000s and HPI SS Monster wheels for me, with glue of course. I am totally psyched. Very unexpected too. They'll be here Friday!!! I'm ordering my radio Friday too. I'm going with the Futaba 2PH. Thanks to all for your valuable opinions. I had to choose what would be best for my budget and style of driving. The 2PH and 2PL were among the most popular recommendations, but I didn't feel the need to spend an extra $26 for a digital display and the ability to program models...